Well, I was really just trying to point out that the fact there are companies whose "mission" he doesn't personally value doesn't mean that their founders have an "inflated sense of self-worth." It's the nature of startups that there are going to be a lot of long-shot and far-fetched ideas involved... if he happens to not disagree with the mission of a particular startup (or its valuation), he shouldn't then jump to the assumption that the founders are arrogant or self-important. He'd only be hurting himself to do that -- they could be perfectly nice people who happen to have stumbled onto a bit of a bubble in the market, and may be willing to help him out even if he's not going to directly get involved in their particular business.

It's just the nature of the Internet, and anything related to consumer entertainment, that there are going to be some really fluffy / inane things that become ridiculously popular / valuable. As long as the folks behind them realize they're not the new Shakespeare, there's no reason to assume they're any different from people working on more mundane or serious problems.